So I almost hate to even ask this question but where do I look to see the "S" on the fly wheel? I only see one whole on the S/G side of the engine that could help me here but I've turned the crank over and over and only see white and yellow marks? I have a timing light and need to tune up this cub. After this I'll get the carb tweaked as well. I've read both guides in the tech section on this forum but for the life of me cannot find this "S"
